docs(env): record VT_MLA_FUSED_NORM_ROPE (A5 fold flag) in STATUS/BEN… #1316

Job	Run time
agent-record	13s
documentation-checkpoint	14s
cuda-arch-features	9s
sanitize-cpu (address,undefined)	20m 39s
sanitize-cpu (thread)	20m 29s
commit-protocol-tag	10s
build-test-cpu	14m 16s
device-leakage	12s
	56m 22s

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